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CIE · IGCSE · Biology

Respiration
Practice Questions

20 CIE IGCSE Biology questions on Respiration, each with instant feedback and a full examiner-style mark scheme.

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✨ Revision guide includes key terms, worked examples and exam technique for Respiration.

Try 2 sample questions on Respiration

Question 1 · 1 mark · Difficulty 1/3

Which word equation correctly summarises aerobic respiration?

  1. Glucose + water → carbon dioxide + ethanol
  2. Carbon dioxide + water → glucose + oxygen
  3. Glucose → carbon dioxide + ethanol
  4. Glucose + oxygen → carbon dioxide + water
Show answer & explanation
✓ Answer: DGlucose + oxygen → carbon dioxide + water
Aerobic respiration oxidises glucose using oxygen to produce carbon dioxide and water, releasing energy. Option B is anaerobic respiration in yeast. Option C is photosynthesis. Option D incorrectly combines water with glucose and produces ethanol, which is not aerobic respiration.
Question 2 · 1 mark · Difficulty 1/3

In which part of the cell does anaerobic respiration occur?

  1. Nucleus
  2. Chloroplast
  3. Cytoplasm
  4. Mitochondrion
Show answer & explanation
✓ Answer: CCytoplasm
Anaerobic respiration takes place in the cytoplasm of the cell, as it does not require the specialised membrane systems of the mitochondria. The nucleus stores genetic information. Chloroplasts carry out photosynthesis. Mitochondria are the site of aerobic respiration, not anaerobic.
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CIE IGCSE Biology: Respiration FAQ

How many CIE IGCSE Biology questions on Respiration are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Respiration for CIE IGCSE Biology, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real CIE paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for CIE IGCSE students preparing for Biology?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Respiration practice with other Biology topics or even switch to a totally different CIE subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the Respiration questions aligned to the official CIE IGCSE Biology syllabus?
Every question is written against the published CIE IGCSE Biology specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CIE paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from CIE.
How is Respiration typically tested on CIE IGCSE Biology papers?
Respiration appears across multiple question types on real CIE IGCSE Biology papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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